You can make a 70-30 rule, 60% on expenditure and 40% on savings.
"Do not spend more than you make." You wont have any money problems EVER if you just spend less than what you bring home.
Be aware of expenses that suck money out of your wallet like expensive coffee, expensive meals.
"Save 15% of your salary." (Yes, you can do this.... save even more than 15%.)
And, start investing in a 401k savings plan or other retirement plan immediately when you get that first real job. (If you wait, you lose time and lose a significant amount of money.)
Hi there Angel! Great question!
Saving money is so important as an adult. This will give you a bit of comfort on rainy days as well as allow you to enjoy a great quality of life. It took me a while to see that doing things like eating at restaurants and drinking $5 coffees wasn't a good use of my money. Once I started budgeting and cooking at home, I saw a lot of money that I could save that wasn't there before. I had to give up some of those things that I splurged on, but I also looked for deals that would allow me to enjoy them once in a while. I also take full advantage of my company's 401k plan, so that I can let my money work for me. There are so many books on ways to save money. I would recommend anything by Dave Ramsey! Good luck!
The trick to saving (and also enjoying life at the same time) is to set targets. As a thumb rule, you should set a target of saving at least 20% of your earnings/salary and then making sure you achieve the target.
E.g.: Suppose you earn $3000/month and you set a target of saving $600/month. Some months you will have activities where you are only able to save $500, make sure you compensate this by saving $700 in the next month.
For investments, 401K (retirement benefit) is a great option. You can also invest in stocks/equity, mutual funds, cryptocurrency etc.
Do remember to diversify and not invest everything into single investment type. Also, do your research through internet and based on your risk appetite invest in the right instrument.
Finally, never use the money from your savings for your daily usage or going overboard. Let your money grow. You should always try to use the
money from your daily expenses (the 80% part and not use the 20% part).
E.g.: If you save $7200 in year 1. Don't use this up the very next year by planning an expensive vacation. Rather you should never use this $7200 and it's returns until you really need it or there is an emergency. Just keep adding to the pool, that's when you will realize the true benefit of compounding.